{"product_id":"unison-research-simplyphono","title":"Unison Research SimplyPhono","description":"\u003cstrong\u003eThe Unison Research SimplyPhono delivers an authentic analog experience through its all-tube circuitry. Designed for precision, it ensures that the acoustic truth of your vinyl records is faithfully reproduced without compromise.\u003c\/strong\u003e\u003cbr\u003e\u003chr\u003e\u003cbr\u003eThe Unison Research SimplyPhono utilizes a pure Class A design without global or local feedback. It employs four ECC83\/12AX7 tubes, arranged to optimize gain and minimize distortion, particularly through an ionic bias configuration that prevents cathode self-polarization effects. The RIAA equalization network is implemented passively, using strictly toleranced resistors and carefully selected capacitors to achieve a precision of 0.1dB across the audio spectrum from 20 Hz to 20 kHz. The design incorporates a high anodic supply voltage providing a stable low ripple power source exceeding 300V, while additional filtering and zener regulation minimize cross-talk and power supply rejection in the critical gain stages. The symmetrical layout further enhances performance by reducing noise and improving audio fidelity, as evidenced by a measurable 20dB improvement in cross-talk at mid-band frequencies.\u003cbr\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePure Class A Operation:\u003c\/strong\u003e Ensures linear amplification without the coloration that feedback can introduce, preserving the original sound quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIonic Bias Configuration:\u003c\/strong\u003e This design prevents unwanted local reverse effects, allowing for greater accuracy and lower distortion levels in audio playback.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassive RIAA Equalization:\u003c\/strong\u003e The use of high-quality components and a passive approach leads to minimal alteration of the musical signal, maintaining its integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Components:\u003c\/strong\u003e Handpicked resistors and capacitors achieve a frequency response tolerance of 0.1dB, ensuring accurate audio reproduction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Voltage Power Supply:\u003c\/strong\u003e Stabilizes the operating conditions for each tube stage, enhancing dynamic response and low noise operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSymmetrical Layout:\u003c\/strong\u003e Reduces cross-talk and noise, significantly improving overall audio clarity and separation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eType: Stereo Phono Valve Preamplifier\u003c\/li\u003e\n\u003cli\u003eClass: Pure A Class\u003c\/li\u003e\n\u003cli\u003eRIAA: Passive +\/- 0.2 dB (20 Hz \/ 20 kHz)\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 800 ohms\u003c\/li\u003e\n\u003cli\u003eOutput: 1 x Line\u003c\/li\u003e\n\u003cli\u003eGain: 52 dB\u003c\/li\u003e\n\u003cli\u003eTotal Harmonic Distortion (THD): 0.4% at 1 Volt output\u003c\/li\u003e\n\u003cli\u003eSignal to Noise Ratio (S\/N): -72 dB\u003c\/li\u003e\n\u003cli\u003eInputs: 1 x MM or MC Phono Input\u003c\/li\u003e\n\u003cli\u003eInput Impedance: 47 kOhm, adjustable to 22 ohm \/ 100 pF\u003c\/li\u003e\n\u003cli\u003eFeedback Factor: 0 dB\u003c\/li\u003e\n\u003cli\u003eValves: 4 x ECC83 \/ 12AX7\u003c\/li\u003e\n\u003cli\u003ePower Supply: External\u003c\/li\u003e\n\u003cli\u003eDimensions: 140 x 290 x 105 mm\u003c\/li\u003e\n\u003cli\u003eNet Weight: 3 kg (including power supply)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Unison Research","offers":[{"title":"Default Title","offer_id":43088231104625,"sku":"URSIMPLYPHONO","price":1999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0642\/0571\/7617\/files\/simplyphono.jpg?v=1774188140","url":"https:\/\/shopodsy.com\/products\/unison-research-simplyphono","provider":"ODSY","version":"1.0","type":"link"}